National Bank Open: Elise Mertens vs Naomi Osaka Set 1 O/U 8.5 leads at 70%. Moderate consensus — room for value on contrarian bets.
| # | Outcome | Probability | If Right | Volume |
|---|---|---|---|---|
| 1 | National Bank Open: Elise Mertens vs Naomi Osaka Set 1 O/U 8.5 | 70% | +44% | - |
| 2 | National Bank Open: Elise Mertens vs Naomi Osaka Set 2 O/U 8.5 | 50% | +98% | - |
| 3 | National Bank Open: Elise Mertens vs Naomi Osaka Set 2 O/U 9.5 | 50% | +98% | - |
| 4 | National Bank Open: Elise Mertens vs Naomi Osaka Set 2 O/U 10.5 | 50% | +98% | - |
| 5 | Completed Match | 50% | +100% | - |
| 6 | National Bank Open: Elise Mertens vs Naomi Osaka Set 1 O/U 9.5 | 50% | +100% | - |
| 7 | National Bank Open: Elise Mertens vs Naomi Osaka Match O/U 21.5 | 48% | +106% | $2 |
| 8 | National Bank Open: Elise Mertens vs Naomi Osaka Set Handicap +/-1.5 | 47% | +113% | $138 |
| 9 | National Bank Open: Elise Mertens vs Naomi Osaka Match O/U 22.5 | 42% | +141% | - |
| 10 | National Bank Open: Elise Mertens vs Naomi Osaka Match O/U 23.5 | 38% | +160% | - |
| 11 | National Bank Open: Elise Mertens vs Naomi Osaka Total Sets: O/U 2.5 | 36% | +178% | $13 |
| 12 | National Bank Open: Elise Mertens vs Naomi Osaka Set 1 Winner | 36% | +182% | - |
| 13 | National Bank Open: Elise Mertens vs Naomi Osaka Set 2 Winner | 36% | +182% | - |
| 14 | National Bank Open: Elise Mertens vs Naomi Osaka | 32% | +217% | $29K |
| 15 | National Bank Open: Elise Mertens vs Naomi Osaka Set 1 O/U 10.5 | 24% | +326% | - |
| 16 | National Bank Open: Elise Mertens vs Naomi Osaka Set Handicap +/-1.5 BEST VALUE | 19% | +426% | $26 |
Real-money prediction market · Trade with confidence
This market refers to the tennis match between Elise Mertens and Naomi Osaka in the National Bank Open, originally scheduled for August 8, 2026 at 10:00AM ET. This market will resolve to 'Elise Merte...
This prediction market tracks whether National Bank Open: Elise Mertens vs Naomi Osaka will occur, with $29K in total trading volume reflecting significant trader interest. Prediction markets aggregate the collective intelligence of participants who stake real money on outcomes, making them one of the most reliable forecasting tools available for events driven by team performance data, historical matchups, and real-time injury reports.
Traders lean toward National Bank Open: Elise Mertens vs Naomi Osaka Set 1 O/U 8.5 at 70%, suggesting a probable but not certain outcome. This moderate confidence level often reflects genuine uncertainty — markets at this range tend to see the most price movement as new information emerges.
Trading activity is exceptionally high, with $29K traded in the last 24 hours alone (99% of total volume). This surge often indicates breaking news, a key deadline approaching, or a significant shift in market sentiment.
This market is scheduled to resolve by 2026-08-15. As the resolution date approaches, expect increased trading activity and tighter probability estimates. Historical data shows that prediction market accuracy improves significantly in the final days before resolution.
As of Aug 07, 2026 at 17:35 UTC, the leading outcome is National Bank Open: Elise Mertens vs Naomi Osaka Set 1 O/U 8.5 at 70% probability, with $29K in total trading volume on Polymarket.
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